Denial of Service (DoS): Incorrect computation of accRewardPerShare due to manipulated lpSupply can lead to flawed reward distribution, potentially causing transaction failures and disrupting the incentive mechanism.
Economic Impact: Manipulation of lpSupply or reward parameters can cause unjust distribution of rewards, diluting rewards for honest participants and undermining the economic incentives of the liquidity pool system.
Affected component(s)
function updatePool in MiniChefV3.sol
Attack vector(s)
An attacker can exploit the updatePool function by manipulating lpSupply or altering the state variables indirectly through other contract interactions. This can corrupt the reward calculation, leading to erroneous updates in accRewardPerShare.
Suggested description of the vulnerability for use in the CVE
The smart contract's updatePool function suffers from insufficient validation and reliance on external inputs in calculating accRewardPerShare. The function updates rewards based on lpSupply, which is vulnerable to external manipulation, leading to potential denial of service or economic damage through the unjust distribution of rewards. An attacker manipulating these inputs could result in an inaccurate reward calculation, affecting all participants in the pool.
Discoverer(s)/Credits
xFuzz
Proposed Solution
Validation of lpSupply Adjustments: Implement stringent checks to validate any adjustments to lpSupply, ensuring that modifications are only possible through secure, predefined paths. This includes validating inputs and state changes to prevent unauthorized manipulations.
Secure Reward Calculation Logic: Enhance the reward calculation logic by safeguarding against potential arithmetic errors. Use established libraries like SafeMath to handle all arithmetic operations, ensuring overflow and underflow are prevented.
Isolation of Reward Calculation: Isolate the reward calculation process from direct influence by external contracts or calls. This can be achieved by caching the lpSupply value at the start of each transaction and using this cached value throughout the reward calculation.
Periodic Audits and Monitoring: Conduct regular audits of the smart contract, focusing on the reward distribution mechanism and lpSupply management. Implement monitoring systems to alert developers and administrators of unusual activities or discrepancies in lpSupply.
Impact
accRewardPerSharedue to manipulatedlpSupplycan lead to flawed reward distribution, potentially causing transaction failures and disrupting the incentive mechanism.lpSupplyor reward parameters can cause unjust distribution of rewards, diluting rewards for honest participants and undermining the economic incentives of the liquidity pool system.Affected component(s)
function
updatePoolin MiniChefV3.solAttack vector(s)
An attacker can exploit the
updatePoolfunction by manipulatinglpSupplyor altering the state variables indirectly through other contract interactions. This can corrupt the reward calculation, leading to erroneous updates inaccRewardPerShare.Suggested description of the vulnerability for use in the CVE
The smart contract's
updatePoolfunction suffers from insufficient validation and reliance on external inputs in calculatingaccRewardPerShare. The function updates rewards based onlpSupply, which is vulnerable to external manipulation, leading to potential denial of service or economic damage through the unjust distribution of rewards. An attacker manipulating these inputs could result in an inaccurate reward calculation, affecting all participants in the pool.Discoverer(s)/Credits
xFuzz
Proposed Solution
lpSupplyAdjustments: Implement stringent checks to validate any adjustments tolpSupply, ensuring that modifications are only possible through secure, predefined paths. This includes validating inputs and state changes to prevent unauthorized manipulations.lpSupplyvalue at the start of each transaction and using this cached value throughout the reward calculation.lpSupplymanagement. Implement monitoring systems to alert developers and administrators of unusual activities or discrepancies inlpSupply.Reference(s)